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Old 01-20-2009, 12:04 PM   #1
New Member
Join Date: Sep 2008
Location: Jacksonville, TX
Posts: 3
Year: 1987
Coachwork: International
Chassis: International
Engine: DT360
Rated Cap: 72
5.13 gears???

Just got me a bus, and about a hundred question , but I will ask them one at a time.

Anyone heard of ~5.13 rear end gears in a bus? Bus specs are in my signature. The rear is stamped Dana. My method for coming up with 5.13 may be flawed. I marked the tire and the driveshaft. I then rolled the bus forward one complete rotation of the tire and counted the number of rotations of the driveshaft. Not an exact method but should be close?

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Old 01-20-2009, 12:50 PM   #2
Bus Nut
Join Date: Dec 2006
Location: downriver, detroit mi
Posts: 794
Re: 5.13 gears???

the method is good and the numbers are in the available ballpark, rember that the tire diametr also comes into the rpm vs mph computation, it is safe to assume a 1 to 1 ratio between the driveshaft and engine in high gear.
their should be a tag on the rear axle that gives you the model and ratio if no one has removed it.
the data plate on the firewall might also give you the ratio.
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